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Crop residue burning in the United StatesLast Updated on 2014-10-26 17:09:05
Crop residue burning occurs in all fifty states, including Alaska. In the contiguous United States nearly 20% of land is dedicated to crops. Residues from corn, cotton, rice, soybean, sugar cane, wheat, grass seed (e.g. Kentucky bluegrass seed), horticultural crops, and fallow fields are most commonly burned. Crop residue burning in the United States takes two forms: (1) the practice of burning residues post-harvest whereby the residues consist of a layer of ground-level senescent vegetation, and; (2) the practice of burning residue pre-harvest (primarily used for sugarcane harvesting), whereby leaves and other biomass are burned prior to the harvest. In addition to burning crop residues both during and after harvest, fire is also used in cropland areas for pest and weed control and to prepare fields for planting. Crop residue burning helps growers stay competitive as it is... More »
Hawaiian Islands Humpback Whale National Marine SanctuaryLast Updated on 2014-07-10 16:22:15
The Hawaiian Islands Humpback Whale National Marine Sanctuary is one of 13 sanctuaries in the National Marine Sanctuary System created under the U.S. Marine Protection, Research and Sanctuaries Act. The sanctuary's goal is to promote comprehensive and coordinated management, research, education and long-term monitoring for the endangered humpback whale and its habitat.
The Hawaiian Islands are the world's most isolated island archipelago, born of ancient volcanoes and inhabited by animals and plants derived from ancestors that found their way here over thousands of miles of ocean. According to scientists, the shallow, warm waters surrounding the main Hawaiian Islands constitute one of the world's most important habitats for the endangered humpback whale. Nearly two-thirds of the entire North Pacific population of humpback whales migrates to Hawai`i each winter. Here,... More »
Monte San Giorgio, SwitzerlandLast Updated on 2014-07-10 15:32:38
Monte San Giorgio (45°55' North and 8°57' East) is a World Heritage Site located in southernmost Switzerland, between the two southern arms of Lake Lugano in the canton of Ticino.
The site has been subject to a number of local and regional protective measures. In summary:
1974: The Cantonal legislature decreed Cantonal authorization for and supervision of the search and collection of rocks, minerals and fossils on the mountain; decree amended 1975 and 1995;
1975: Cantonal regulation for the Protection of Flora and Fauna designated the whole mountain a Natural Protection zone;
1977: The entire site was listed on the Swiss Federal Inventories of Landscapes, Sites and Natural Monuments and of Heritage Sites of National Importance, based on articles 5 and 6 of the1966 Federal law on the Protection of Nature and Preservation of Natural Heritage;
1982: The Arzo... More »
Monterey Bay National Marine SanctuaryLast Updated on 2014-07-10 15:23:34
The Monterey Bay National Marine Sanctuary (MBNMS), designated in 1992, is a Federally-protected marine area offshore of California's central coast. Stretching from Marin to Cambria, the MBNMS encompasses a shoreline length of 276 miles and 5,322 square miles of ocean, extending an average distance of 30 miles from shore, extending from Rocky Point (just north of San Francisco's Golden Gate Bridge) to Cambria (just north of Morro Bay). At its deepest point, the MBNMS reaches down 10,663 feet (more than two miles). It is the USA's eleventh Marine Sanctuary and second only to the Northwestern Hawaiian Islands Marine National Monument in size—larger than Yosemite or Yellowstone National Parks.
The MBNMS was established for the purpose of resource protection, research, education and public use. Its natural resources include the USA's largest kelp forest, one of... More »
Gray’s Reef National Marine SanctuaryLast Updated on 2014-07-08 18:36:18
Within the 17-square-nautical-mile sanctuary, there are both rocky ledges and sandy flat places. The reefs' rock ledges, submerged beneath 60 to 70 feet of water, can be as tall as 6-8 feet and are highly complex, with nooks and crannies that provide habitat for invertebrates and fishes to hide. The attached invertebrates form a dense carpet of living creatures that in places completely hides the rock. This feature gives the habitat of Gray's Reef its common name -- a "live bottom." Gray's Reef National Marine Sanctuary, designated in January 1981, is one of the largest near-shore live-bottom reefs in the southeastern United States. The sanctuary is located 32 kilometers (17.5 nautical miles) off Sapelo Island, Georgia and encompasses 58 square kilometers (17 sq. nautical miles) of live-bottom habitat. It is one of 13 marine sanctuaries that make up the... More »
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